According to a study in Japan, the ability to balance a full squat reflects the ankle’s flexibility. Many Asian people are able to perform it. Although it’s not a pretty pose, but it gives you pretty abs and thighs.

Follow the steps illustrated below: 

1) Stand straight and feet hip-width apart

2) Keep your knees in line with your feet

3) Straighten your arms as you began moving to squat down position

4)keep the squatting position for at least 2 seconds, then slowly rise up.

Do 10-15 times per set, stop for 30 seconds to 1 minute before the next set. Practice it 2 to 3 sessions per day, and you may increase counts gradually.
Note: Warm up your body before squatting. This exercise may not be suitable for people with knee problems, do practice with caution.